August f



UNITED STATES PATENT OFFICE.

AUGUST F. W. PARTZ, OF NEW YORK, N. Y.

HYDRAULIC BLAST-GENERATOR.

Specification of Letters Patent No. 17,447, dated June 2, 1857.

To all whom it may concern:

Be it known that I, AUGUST F. W. PARTZ, of the city, county, and State of New York, have invented new and useful Improvements in Hydraulic Blowing-Machines; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings and to the letters of reference marked thereon.

The nature of my invention consists in producing a permanent current of air by continuously subjecting volumes of air to the pressure of columns of water or other fluid by means of a wheel or cylinder parn tially immersed in the fluid and revolving on a horizontal axis, which wheel or cylinder is divided into compartments so arranged, that with each revolution they alternately take in, through openings at the periphery, volumes of air and of fluid, both of which are forced, by hydrostatic pressure, to the center, and discharged, through a hollow shaft, into an adjacent chamber, whence the fluid flows back to its source, while the compressed air passes out of an opening, or a pipe conveniently adjusted.

I will now proceed to describe more minutely the construction and operation of my hydraulic blowing machine.

In my drawings, a is a cylindrical vessel divided into two chambers, l and 2, by the partition o, which does not quite extend to the bottom of the vessel, thus leaving a communication between the two chambers. At the top of the chamber 2 is an opening, wide enough for a free access of air 'and furnished with a funnel for supplying the vessel a with water.

o, e, Figure A shows a vertical section, and o, cl, c, Fig. B a side view of a wheel composed of two parallel disks, c, ol, and three coiled partition plates, c, e, e, that are interposed between said disks and wind, in the same direction, from the center to the periphery, thus forming three coiled compartments or tubes, 3, 3, 3, which communicate, at the center with the cylinder or hollow shaft f, that rests in the airtight journal g. The driving shaft h, which lies in the watertight journal z', is solid.

The operation of this machine is as follows: The vessel a being filled with water to about the height of the shaft h, and power being applied to the pulley 7c in such a manner that the wheel o, d, e is revolved in the direction indicated by the arrow, the

coil compartments or tubes 3, 3, 3, successively take in, through their openings at the periphery, portions of air and of water, which are constantly moved toward the cen ter, whence they are discharged, through the cylinder or hollow shaft f, into the chamber 1, the water flowing back, through the opening 4e, into the chamber 2, and the air, under the pressure of columns of water within the coiled compartments 3, 3, 3, passes out of the opening 5, to which a pipe may be attached for conducting the current of air to the place where it is required.

The compression of the air, and consequently the velocity of the current issuing from the opening 5, may conveniently be de termined by the depression of the level of the water in the chamber 1, for the observation of which'a glass plate may be inserted in the casing of said chamber, or a glass tube, Z, be attached, similar to the water gage on steam boilers. The water cock m is intended for drawing off the water to prevent freezing, etc.

This blowing machine may eectually be driven at a very slow speed, if its dimensions are in due proportion to the quantity and pressure of air required; thus a great deal of gearing and belting necessary -for obtaining the requisite speed in ordinary centrifugal blowers may be avoided, and a vast amount of power, now generally lost by the friction of a number of bearings, gudgeons, etc., be saved.

Vithout altering the speed of the pulley 7c, the velocity of the current of air'produced by this machine may be regulated,.to a certain extent, simply by increasing or decreasing the bulk of water contained in the vessel a.

It is apparent that, instead of the wheel above described, a pipe or pipes, coiled around a hollow shaft in a. manner analogous to the partitions of said wheel and communicating with said shaft, or a cone with spiral compartments, or any other corresponding device, may be substituted to the same effect.

My machine may be converted into an air exhauster simply by revolving the wheel o, fl, e in the opposite direction, and instead of the chamber 1, the chamber 2 may be closed on top, except a small opening like 5, by which arrangement exhaustion will be produced, when the wheel is revolved in the direction of the arrow, while air will be cating near its bottom'with the Vessel inclosing the wheel, into which chamber the `hollow shaft of said wheel opens and discharges, and which contains an outlet for the air accumulating in its upper part, substantially in the manner and for the purpose herein described.

AUGUST F. W. PARTZ.

Witnesses:

R. N. I-IAVENS, I. VAN BUREN. 

